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What are the special features of the alveoli ?
Enormous surface area , thin walls , moist lining and very good blood supply
State the difference between "Breathing " and Respiration
Breathing is the physical process where you take in oxygen and release carbon dioxide while Respiration is the chemical reaction happening
Which ingredient in cigarettes causes the user to get addicted?
Nicotine
Tar bind to the red blood cells so it cant carry oxygen. True or False
False
-------------- cause paralysis of the cilia
Tar
Give an example of a social drug
Caffeine
--------------- is a hallucinogenic drug that makes people hear or see things differently
Cannabis
--------------- bind to the red blood cells so it cant carry oxygen
Carbon monoxide
Face drooping to one side , can’t hold their hand in the air and their speech is hard to understand these are symptoms of
Brain stroke
During exercise Student A: heart rate 170 while Student B: heart rate 140 Which student is more fit ?
Student B
plaque is -------------------
a mixture of fats , cholesterol and blood cells
The air sacs where gas exchange takes place in are called
Alveoli
